How would you describe the death rate of the bee population throughout the life stages? 120 100 40 20 15 20 25 age (days) Figure 1. Survivorship curve of Apis mellifera. 1. Figure 1 shows a Type survivorship curve. 2. How would you describe the death rate of the bee population throughout the life stages?
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- 會 事 3 of 6 Base your answers to questlons 14- 16 on the Information below and on your knowledge of blology. Unless actions are taken to slow the decline of domesticated honeybees and augment [increase] their populations with wild bees, many fruits and vegetables may disappear from the food supply, said Claire Kremen, a conservation biologist at Princeton University in New Jersey.. The honeybee decline, which is affecting domesticated and wild bee populations around the world, is mostly the result of diseases spread as a result of mites and other parasites as well as the spraying of crops with pesticides, scientists say. Source: "Bee Declines May Spell End of Some Fruits, Vegetables," National Geographic News, October 5, 2005 14. The decrease in the honeybee population is partly due to A. the use of pesticides B. the use of fertilizers C. a decrease in prey D. a decrease in fruits and vegetables 15. "Diseases spread as a result of mites" would be considered a factor. A. density…what type of survivorship curve is present here? (type I, type II, type III) how would you describe the death rate of the bee population throughout the life stages?The pesticide DDT was widely used in the 1940s as a method of insect control. In the late 1950s the first DDT-resistant mosquitoes were discovered, and eventually DDT-resistant mosquitoes were found globally. When DDT is used now, the development of DDT resistance in mosquito populations occurs in months rather than years.Which of the following best explains the observations concerning DDT resistance in mosquitoes? * nd 2 school The proportion of DDT-resistant mosquitoes in a population remains constant due to the metabolic costs of DDT utilization DDT is a chemical signal that delays normal reproductive cycles in many mosquito populations. Natural selection favors DDT-resistant mosquitoes that are already present in a population when DDT exposure occurs. Competition for limited resources causes mosquitoes to migrate to geographical areas that have richer supplies of DDT. A population of 1.492 finches is introduced to a rainforest. Over the next year, the finches showa death rate of…
- In a habitat there are 7,500 individuals of P. rufipes, 40% of which have long and thin ovipositors and 60% have short and thick ovipositors. During a single year 250 wasps with long and thin ovipositors died while 325 were born. In that same year, 650 wasps with short, thick ovipositors were born and 800 died. Calculate the per capita growth rate (r) of the two subpopulations of P. rufipes. Per capita growth rate of P. rufipes with long and thin ovipositors: _________ Per capita growth rate of P. rufipes with short and thin ovipositors: _________Which row below best describes why the population of adult mosquitoes would drop so dramatically during this time period Feb. 5, 2007 Something is wiping out honey bees across North America and a team of researchers is rushing to find out what it is. What’s being called Colony Collapse Disorder (CCD) has now been seen in Pennsylvania, North Carolina, Florida, Georgia and way out in California. Some bee keepers have lost up to 80 percent of their colonies to the mysterious disorder. Whatever kills the bees targets adult workers, which die outside the colony — with few adults left inside, either alive or dead. The disorder decimates the worker bee population in a matter of weeks. Aside from making honey, honey bees are essential for the pollination of tens of million of dollars worth of cash crops all over the United States. That’s why almond growers of California, for instance, are taking notice and pledging funds to help identify and fight the honey bee disorder. Among the…Based on the text on mosquitoes eating: 1. Identify abiotic factors that support the survival and reproduction of the mosquitoes and why the mosquitoes needs this factors. 2. Identify biotic factors that support the survival and reproduction of the mosquitoes and why the mosquitoes needs this factors 3.Predict what factors in the environment can be altered to decrease the survival and reproduction of the mosquitoes and why. PLEASE ANSWER ALL QUESTIONS
- Both reproductive and legislative control methods play important role in insect pest management. Explain your answer with relevant examples from different countries.forest sites than in forest fragments, whereas there were no significant differences between fragments of different sizes. These results provide further evidence for the effects of habitat size on the phorid-Acromyrmex system in a tropical rain forest, based on the abundance of parasitoids both as adults in the field and as reared immature phorids in the laboratory. Phorid parasitized leafcutter ants were most abundant in areas of continuous forest, and less abundant in the forest fragments. O Phorid flies are important parasitoids of leafcutter ants nd leafcutter ants can be found in Brazil's Southeastern Both phorid flies Atlantic Forest. The study provides evidence that this parasitoid-host interaction between phorid flies and leafcutter ant differs between continuous forest and forest fragments. Phorid flies were just as abundant in forest fragments as they were in continuous forest, but were less successful in parasitizing leafcutter ants.Larvae and pupae per Bt plant 100 JA 5 TOH -- Mosaic, Cry1Ac plant --0-- Mosaic, Cry1C plant -- Sequential, Cry1Ac plant --- Sequential, Cry1C plant Pyramid, two-gene plant L 1 1 3 6 9 12 15 18 21 24 Generation Figure 1. The figure above shows the average numbers of larvae and pupae of the moth found per Bt plant in each of the treatments. Note the logarithmic scale on the y-axis. Question 5. Assuming that the differences in moth density between the two plants in the mosaic treatment are completely due to differences in toxicity, to which toxin were the moths most susceptible?
- Colony collapse disorder (CCD) is unexplained loss of entire bee colonies that has been occurring in increased numbers across the world. The cause of the disorder is unknown, although it has been suggested that pesticides may play a role. To study this phenomenon, 300 bee colonies at 20 different sites across the U.S. are analyzed. Colonies are classified as having no CCD symptoms (group 1) or as having CCD symptoms (group 2). Bee pollen is isolated from group 1 and group 2 colonies and analyzed for the presence of pesticides. Significantly higher average pesticide levels being found in group 2 colonies, the conclusion of the study states that increasing pesticides use may be leading to the death of bees and a loss of bee colonies in CCD. Does this study have a control group? If so, what is the control group? If not, why not?New folder New folder ogy Posttest Spring 2021 Question 32 II Pause Zoom A man treated his home with a pesticide that kills roaches. The first application of the pesticide killed 92% of the roaches. Two months later, he applied the same pesticide to his home again, but the second application killed only 65% of the roaches. What would best explain the decrease in the effectiveness of the pesticide? The pesticide is effective only against mature roaches. The pesticide caused some of the roaches to mutate and metabolize the pesticide. The pesticide lost its effectiveness over a period of time The surviving roaches were naturally resistant to the pesticide and that resistance was inherited by their offspring 02021 luminate EducationM Inc.27 - 28. Which letter would correctly fill in each blank to correctly complete the sentences. This behavior has primarily a 27. for the colony as a whole. Individual meerkats expose themselves above the colony's burrow to watch for predators. cost for the individual but increases 28. 27. 28. A. energy А. reproduction В. opportunity B. resources C. risk C. survivorship Illuminate Education TM, Inc.